Improvement in rotary harrows



UNITED STATES JOHN w. BARTON AND THOMAS HOLMES, on EMPORIA, KANSAS.

IMPROVEMENT lN ROTARY HARROWS.`

Specification forming part of Letters Patent No. 112,676, dated March14, 1871.

To all whom it may concern:

Be it known that we, JOHN W. BARTON and THOMAS HOLMES, of Emporia, inthe county use the saine, we Will now proceed t0 describe itsconstruction and operation, referring to the annexed drawing, in which-Figure l is a plan View, and Fig. 2 is a rear elevation, of our harrow.

A Arepresent two circular harrows vof any suitablesize and construction,each revolving around a bearing, B, which passes through the center ofthe harrow. A cross-bar, O,con neet-S the two bearings B B, saidcross-bar having at each end twostrips, D D,of iron, rnily secured toit. These strips form a s lot at the ends of the cross-bar suflicient toallowthe bearings to pass between them and be bolted, or, rather,pivoted by bolts, the bearings being iiattened for that purpose. In theupper end of each ofthe bearings is att-ached' a rod,

` E, which is iattened and slotted at its other end, and fastened to thecross-bar C by means of a set-screw, Gr, passing through said slot.

By this means IV am enabled to shift the rotation of the harrows in orout, as desired,

giving perfect control of the rotation, which is considered above al1most essential.

The Screws G G are tightened4 just sufficient to hold the harrows in thedesired position to rotate either in or out while working, but VStillallow the harrows to turn on their bearingpivots when a solidobstruction should happen to come between the harrows. In such case theslOttedbrace-rods E E will slide and allow the harrows to turn out androtate over without straining on any part of the harrow.

In each of the bearings B, below the point where the same is pivoted tothe bars D D, is

inserted and fastened a draft-rod, H, which is without any joint whereit enters the bearing, making it more substantial and less liable tobreak and get out of repair. The draft-rods H H are pivoted to thedouble-tree I, and the tongue J passes through a staple on the Same andthrough a staple on the cross-bar C, as shown.

Having thus fully described our invention, whatwe claim as new, anddesire to secure by Letters Patent, is-

The combination of the harrows A A, bearings B B, crosS-bar C, with ironstrips D D, brace-rods E E,set-Screws G G,and draft-rods H H, allconstructed and arranged to operate substantially as and for thepurposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our handsthis 5th day of January, 1871.

JOHN W. BARTON.

. THOMAS HOLMES.

Witnesses:

ROBERT B. HUNT, HOWARD DUNLAP.

